MachineU > China Products > Chemicals > Inorganic Chemicals > Non-Metallic Products > Ceramics

Specifications

Brand Name :

Antaeus

Model Number :

AD-A012

Certification :

Place of Origin :

Hunan,China

MOQ :

Negotiation

Price :

Negotiation

Payment Terms :

T/T or Negotiation

Supply Ability :

Full Supply

Delivery Time :

15-45 days

Packaging Details :

Inner vacuum packaging, outside carton.

Chemical ingredients :

Al2O3

Max. Use Temp. :

1650℃

Bulk Density :

3.6g/cm3-3.9g/cm3

Water absorption :

ROHS Hardness :

≥85

Flexural strength :

358(52) - 550 Mpa(psix10^3)

Compressive Strength :

2068(300) - 2600(377) Mpa(psix10^3)

Coefficient of thermal expansion :

7.6 - 8.2 / 1X10^-6/℃

Coefficient of thermal conductivity :

16-30.4 / W/m.K

Thermal Shock Resistance :

250℃

Dielectricity constant :

9-9.7 / 1MHz.25℃

Dielectric strength :

8.3(210) - 8.7(220) / ac-kV/mm(ac V/mil)

Volume Resistivity :

>10^13 ohm-cm

Description

Alumina ceramic components / relay ceramic assemblies / ceramic - metal brazed contactor / metallized brazed ceramic parts for relay contactor

1. Description:

Antaeus has worked with numerous companies to help develop critical components that are used in the aerospace industry. Based off of the customer’s print we help them create specialized components, to tight tolerances, that fit in the packages they supply. Our engineering team along with our manufacturing capabilities allow us to provide custom components, from one-offs to hundreds of thousands of parts, which are used in specialized assemblies in the aerospace industry.

The components we manufacture are used in a variety of aerospace applications such as: Satellites ; Missile Guidance / Detonation Systems ; Instrument / Control Systems ; Engine & Exhaust Systems ; Thermal Barriers.

2. Feature Advantages:

1) Good advanced ceramic materials

2) High welding sealing performance

3) High hardness and high density

4) Low thermal conductivity

5) Chemical inertness

6) Good wear resistance

3. Material Features / Properties:

Composite	(wt %)	99%	99.5%	99.8%
Color		White or Ivory	White or Ivory	White or Ivory
Density	g/cm 3	3.82	3.9	3.92
Hardness	HRA	83	85	85
Flexural Strength	Mpa (psi*10 3 )	375	386	381

4. Technical Parameters:

Technical Parameters of Ceramics
Items	Test Conditions	Unit or Symbol	99% AL2O3	95% AL2O3	90% AL2O3	Zirconia	Steatite	Silicon Carbide
Volume Density	--	g/cm3	≥3.70	≥3.62	≥3.40	≥5.90	≥2.60	≥3.08
Tightness	--	Pa·m³/s	≤1.0×10-11	≤1.0×10-11	≤1.0×10-11	-	-	-
Liquid Permeability	--	--	Pass	Pass	Pass		Pass	-
Flexural Strength	-	MPa	≥300	≥280	≥230	≥1100	≥120	≥400
Elastic Modulus	-	GPa	-	≥280	≥250	≥220	-	400
Poisson Ratio	-	-	-	0.20～0.25	0.20～0.25	-	-	-
Thermal Shock Resistance	800℃( Room Temperature) Cycle: 10 times		Pass	Pass	Pass	-	-	-
Coefficient of Linear Expansion	20℃～100℃	×10-6 K-1	-	-	-		≤8	-
	20℃～500℃	×10-6 K-1	6.5～7.5	6.5～7.5	6.5～7.5	6.5～11.2	-	-
	20℃～800℃	×10-6 K-1	6.5～8.0	6.5～8.0	6.3～7.3		-	4
	20℃～1200℃	×10-6 K-1	-	7.0～8.5	-	-	-	-
Coefficient of Thermal Conductivity	20℃	W/(m·k)	-	-	-	-	-	90～110
Coefficient of Thermal Conductivity	1000℃	W/(m·k)	-	-	-	-	-	90～110
Dielectric Constant	1MHz 20℃	-	9.0～10.5	9.0～10	9.0～10	-	≤7.5	-
	1MHz 50℃	-	-	9.0～10	-	-	-	-
	10GHz 20℃	-	9.0～10.5	9.0～10	9.0～10	-	-	-
Volume Resistivity	100℃	Ω·cm	≥1.0×1013	≥1.0×1013	≥1.0×1013	-	≥1.0×1012	-
	300℃		≥1.0×1013	≥1.0×1010	≥1.0×1013	-	-	-
	500℃		≥1.0×109	≥1.0×108	--	-	-	-
Disruptive Strength	D.C	kV/mm	≥17	≥15	≥15	-	≥20	-
Chemical Durability	1:9HCl	mg/c㎡	≤0.7	≤7.0	-	-	-	-
Chemical Durability	10%NaOH	mg/c㎡	≤0.1	≤0.2	-	--	-	-
Grain Size	-	μm	-	3~12	-	-	-	-

5. Process Flows:

Formulating --- Granulating --- Forming --- Sintering --- Grinding --- Inspecting --- Packing